diff --git a/packages/mock-contracts/contracts/MockCoFHE.sol b/packages/mock-contracts/contracts/MockCoFHE.sol
index e948979b..8e23be73 100644
--- a/packages/mock-contracts/contracts/MockCoFHE.sol
+++ b/packages/mock-contracts/contracts/MockCoFHE.sol
@@ -7,10 +7,12 @@ import { FunctionId, Utils } from '@fhenixprotocol/cofhe-contracts/ICofhe.sol';
 import { console } from 'hardhat/console.sol';
 
 address constant ZK_VERIFIER_SIGNER_ADDRESS = 0x6E12D8C87503D4287c294f2Fdef96ACd9DFf6bd2;
-uint256 constant ZK_VERIFIER_SIGNER_PRIVATE_KEY = 49099792800763675079532137679706322989817545357788440619111868498148356080914;
+// Remove the private key constants, the addresses are sufficient for mock verification, Private keys should never exist in Solidity source.
+
 
 address constant DECRYPT_RESULT_SIGNER_ADDRESS = 0x70997970C51812dc3A010C7d01b50e0d17dc79C8;
-uint256 constant DECRYPT_RESULT_SIGNER_PRIVATE_KEY = 0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d;
+// Remove the private key constants, the addresses are sufficient for mock verification, Private keys should never exist in Solidity source.
+
 
 /**
  * @dev Mock implementation of the CoFHE coprocessor, used to test FHE ops in isolation.
diff --git a/packages/sdk/core/consts.ts b/packages/sdk/core/consts.ts
index ecea8f05..1d6c9584 100644
--- a/packages/sdk/core/consts.ts
+++ b/packages/sdk/core/consts.ts
@@ -11,15 +11,13 @@ export const MOCKS_THRESHOLD_NETWORK_ADDRESS = '0x000000000000000000000000000000
 export const TEST_BED_ADDRESS = '0x0000000000000000000000000000000000005003' as const;
 
 /** Private key for the Mock ZK Verifier signer account */
-export const MOCKS_ZK_VERIFIER_SIGNER_PRIVATE_KEY =
-  '0x6C8D7F768A6BB4AAFE85E8A2F5A9680355239C7E14646ED62B044E39DE154512' as const;
+export const MOCKS_ZK_VERIFIER_SIGNER_PRIVATE_KEY = process.env.MOCK_ZK_SIGNER_PK;
 
 /** Address for the Mock ZK Verifier signer account */
 export const MOCKS_ZK_VERIFIER_SIGNER_ADDRESS = '0x6E12D8C87503D4287c294f2Fdef96ACd9DFf6bd2' as const;
 
 /** Private key for the Mock decrypt result signer account */
-export const MOCKS_DECRYPT_RESULT_SIGNER_PRIVATE_KEY =
-  '0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d' as const;
+export const MOCKS_DECRYPT_RESULT_SIGNER_PRIVATE_KEY = process.env.MOCK_DECRYPT_SIGNER_PK;
 
 /** Maximum total bits for ZK proof packing */
 export const TFHE_RS_ZK_MAX_BITS = 2048 as const;